Malicious PDF — malware analysis report

Static analysis result for SHA-256 f556830be0ef9f77…

MALICIOUS

PDF

39.0 KB Created: 2020-08-16 00:56:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac5c80ee44a2895d8a5e03339c5025c2 SHA-1: 997fca56c3305d1878fc7ffeccf8a3d10aef6d38 SHA-256: f556830be0ef9f776bb1ed0630d53e363428bb9fd0b16bbf992b195c79b9444f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to external resources, a technique often used for SEO poisoning or to redirect users to malicious sites. One critical heuristic firing indicates a direct link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=voltage+transformer+manufacturers+south+africa, suggesting a lure to disguise the malicious intent. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=voltage+transformer+manufacturers+south+africa
    • http://files.ccsacc.com/uploads/1/3/2/8/132814589/4c6e0.pdf
    • http://files.leahkneipp.com/uploads/1/3/1/8/131871859/bawow_wizekun_forulaxiwob.pdf
    • https://cdn.shopify.com/s/files/1/0429/4115/3439/files/k_ril_tsutsaroth_rs3.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/6338597663.pdf
    • https://cdn.shopify.com/s/files/1/0435/8383/2227/files/ncert_chemistry_textbook_class_12_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97897646990.pdf
    • https://cdn.shopify.com/s/files/1/0433/1202/1662/files/91982818078.pdf
    • https://cdn.shopify.com/s/files/1/0432/4094/7880/files/poesia_trovadoresca_cantigas_de_amigo.pdf
    • https://cdn.shopify.com/s/files/1/0428/4976/3494/files/toraxulonetukijum.pdf
    • https://cdn.shopify.com/s/files/1/0433/4508/4574/files/customary_unit_conversion_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/3511/5176/files/medasojane.pdf
    • https://cdn.shopify.com/s/files/1/0432/9635/8565/files/after_effect_classroom_in_a_book.pdf
    • https://cdn.shopify.com/s/files/1/0438/4089/7189/files/garuzodijufur.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ba2.bin
3abc543a6cf3476d66872c4dbb57fbf2e6e63ec1b0bcd95a9725559697857edd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA2 5260 bytes
font_01_sfnt_off00006d58.bin
41d1bd894e716b01333dda9fc07560c14d15463b8c2146349a874c7111ec85e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D58 9896 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.